Oxygen Carrier Aided Combustion in Fluidized Bed Boilers in Sweden—Review and Future Outlook with Respect to Affordable Bed Materials
Round 1
Reviewer 1 Report
From my point of view, this is a very good article that will find its readers working in various sectors of energy and chemical technologies. Sweden is one of the leading countries in the development of fluidized bed boilers for burning various types of fuel. Oxygen carrier aided combustion is one of the innovative technologies of combustion, which allows to increase its efficiency and reduce the emission of harmful components into the atmosphere. It is fundamentally important that it has already passed industrial testing, from which it is possible to draw real conclusions about its prospects. The authors analyze in detail the possible risks from its mass use, which is also important for an impartial assessment of its prospects. The article is well structured and written in a language that meets the standards of scientific publication.
I recommend that you accept the article for publication in the present form.
Reviewer 2 Report
The Paper entitled "Oxygen Carrier Aided Combustion in Fluidized Bed Boilers in Sweden – Review and Future Outlook with Respect to Affordable Bed Materials" by Felicia Störner, Fredrik Lind and Magnus Rydén reviews results from utilizing low-cost materials emerging from metallurgical industries for conversion of biomass and waste in semi-commercial and commercial fluidized bed boilers in Sweden. The paper further goes on to discuss practical aspect of utilizing oxygen carriers, such as production and transport within the unique conditions in Sweden, where biomass and waste combustion as well as metallurgical industries are of large scale. This study concludes that utilizing metal oxides in this way could be technically feasible and beneficial to both the boiler owners and the metallurgical industries. The paper is interesting, well written and it is worth publishing. A recommend it for publication as-is.